> For the complete documentation index, see [llms.txt](https://internalsecrets.sendify.cc/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://internalsecrets.sendify.cc/sms-overview.md).

# SMS Overview

- [MCC-MNC](https://internalsecrets.sendify.cc/sms-overview/mcc-mnc.md)
- [Page](https://internalsecrets.sendify.cc/sms-overview/page.md)
- [SMS Concept](https://internalsecrets.sendify.cc/sms-overview/sms-concept.md)
- [A2P](https://internalsecrets.sendify.cc/sms-overview/a2p.md)
- [SMPP](https://internalsecrets.sendify.cc/sms-overview/smpp.md)
- [SMPP Error Codes](https://internalsecrets.sendify.cc/sms-overview/smpp/smpp-error-codes.md)
- [Rate/ Routing](https://internalsecrets.sendify.cc/sms-overview/rate-routing.md)